【摘 要】
：
国外岩金矿山露天开采刍议张亚林李平郭向华焦建团（黑龙江乌拉嘎金矿）（冶金工业部长春黄金设计院）１引言岩金矿山露天开采比地下开采具有生产能力大，作业条件好，损失贫化率低，达产时间
【机 构】
：
黑龙江乌拉嘎金矿,冶金工业部长春黄金设计院
论文部分内容阅读
国外岩金矿山露天开采刍议张亚林李平郭向华焦建团（黑龙江乌拉嘎金矿）（冶金工业部长春黄金设计院）１引言岩金矿山露天开采比地下开采具有生产能力大，作业条件好，损失贫化率低，达产时间短和采矿成本低等优点。所以，在国外黄金行业中早已被引起重视。以美国和澳大利...
Discussion on Opencasting of Rock and Mineral in Foreign Rocks Zhang Yalin Li Ping Guo Xianghua Jiao Jianqun (Wulaga Gold Mine, Heilongjiang Province) (Changchun Gold Design Institute, Ministry of Metallurgical Industry) 1 Introduction Open pit mining of rock gold mine is more effective than underground mining in terms of production capacity, good working conditions, Low rate, short production time and low cost of mining. Therefore, in the foreign gold industry has long been taken seriously. With the United States and Australia ...
其他文献
随着我国房地产业的不断发展，其对我国经济和社会产生的影响也越来越大，并且逐渐成为我国经济中的重要产业之一。由于房地产业涉及的行业多、影响的范围广，关系到每一位居民的基
Abstract: In order to improve students’ ability of reading, there are some methods. Students need to appreciate the beauty of language, and cultivate their language ability. Teachers should offer more
Abstract: English is compulsory basic education issues. Currently, the primary stage of learning English is becoming increasingly popular in China, The aim is to inspire and train students interest in
江泽民总书记在庆祝中国共产党成立80周年大会上的讲话中指出:从鸦片战争到中国共产党成立,从中国共产党成立到现在,中国经历了截然不同的两个80年。从这前后两个80年的比较
政府机关党的工作是党的建设的重要组成部分。加强机关党的建设,对于转变机关作风,提高办事效率,全面完成各项工作任务,具有重要意义。按照江泽民总书记“三个代表”重要思
Abstract:Imagine writing is a writing which students use their imagination to describe the things he has not experienced before or just a fictional writing style. The junior high students has little e
企业的投资决策及其效率是企业价值提升和驱动力保障的关键所在，同时也关系着所属产业的资源配置效率。企业的非效率投资问题一直是国内外学者重点关注的对象，大量研究表明我国